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[CNet]Apple said to be looking into iPhone 4S battery drain - Page 6

post #51 of 85
I'm lucky if I get 5 hours out of mine.
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post #52 of 85
Just FYI:

I came into work today at Sprint and checked our Known Device Issues database this morning to see if this was listed as an 'official' issue yet. The iPhone 4S has 14 known issues and the iPhone 4 has 13 known issues. This is the most issues I have seen show up this soon after a phone's launch. The battery issue wasn't even listed yet. It amazes me that people actually believe Apple makes a reliable product.
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post #53 of 85
Solution: Turn off "Setting Time Zone" in Location Services --> System Services. Read that last night from an Australian source. Some dude pinpointed the problem.
post #54 of 85
Quote:
Originally Posted by LastBucsfan View Post
Just FYI:

I came into work today at Sprint and checked our Known Device Issues database this morning to see if this was listed as an 'official' issue yet. The iPhone 4S has 14 known issues and the iPhone 4 has 13 known issues. This is the most issues I have seen show up this soon after a phone's launch. The battery issue wasn't even listed yet. It amazes me that people actually believe Apple makes a reliable product.
I'd bet most (if not all) of those issues are software related. This isn't particularly surprising considering Apple launched iOS 5 and iPhone 4S at the same time. Of course a new OS is going to have some bugs.
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post #55 of 85
Anand Shimpi talks about the iPhone 4S's battery life and why it's not a hardware problem:

http://www.bloomberg.com/video/79346962/
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post #56 of 85
Quote:
Originally Posted by steelbom View Post
To all of you: you're all wrong. The fact that it has a dual core should improve battery life in many circumstances and that dual core is also a newer architecture which furthers that. The problem is that some are getting great battery life and others terrible battery life. I'd hardly call that a hardware problem.
You clearly have no idea what you are talking about.

1. Introducing a dual core does NOT improve battery life. If you introduce a dual core that had equal or less power draw then the previous generation, then it does improve battery life. If the above is true, and if the OS would to power down 1 core during light operations and lower voltages as well, dual cores can improve battery drastically. Efficient threaded coding for dual cores can also improves battery life. It has nothing to do with the dual core itself. Edit: a dual core only makes it possible for the conditions stated above.

2. Newer architectures do NOT improve battery life. We have seen this with many CPUs released; especially the AMD FX series. Chip designs that are more efficient and designed to use less power improves battery life.

3. Hardware problems can be a root cause when considering poor construction or manufacturing problems. Such causes can be voltage leaks, poor electrolyte concentrations, etc.

4. I believe it was confirmed to be due to poor coding on apples part; the phone was constantly updating its time presets or something.

Please stop posting in these threads.
Edited by Domino - 11/1/11 at 9:40pm
post #57 of 85
Quote:
Originally Posted by Domino View Post
You clearly have no idea what you are talking about.

1. Introducing a dual core does NOT improve battery life. If you introduce a dual core that had equal or less power draw then the previous generation, then it does improve battery life. If the above is true, and if the OS would to power down 1 core during light operations and lower voltages as well, dual cores can improve battery drastically. Efficient threaded coding for dual cores can also improves battery life. It has nothing to do with the dual core itself.

2. Newer architectures do NOT improve battery life. We have seen this with many CPUs released; especially the AMD FX series. Chip designs that are more efficient and designed to use less power improves battery life.

3. Hardware problems can be a root cause when considering poor construction or manufacturing problems.

4. I believe it was confirmed to be due to poor coding on apples part; the phone was constantly updating its time presets or something.

Please stop posting in these threads.
Sigh...

1) I never said it was anything to do with the dual core itself, I obviously meant the fact that tasks can finish twice as quickly with a dual-core and thus still use the same amount of power which isn't true in all cases of course, but I didn't need to say that. Look at the iPad 2 for example, which has the A5 yet actually gets better battery life whilst having a battery that's only 0.1 Whr more than the battery in the iPad 2.
2) They don't necessarily improve battery life, but the ARM Cortex A9 architecture offers both better performance and better power consumption at the same clock speed IIRC
3) That's true, but there's nothing to indicate even slightly that it's a hardware problem at this point in time
4) Nothing is confirmed yet although it looks to be the time zone polling right now

Sigh.. how about you read my posts a little more clearly? I'm not stopping posting, and my information isn't wrong either. I'd wish you stop saying such things...

EDIT: To quote Anand from the link posted above (~1:10-1:38) he says ~"The iPhone 4S, despite the improved performance, is actually more power efficient or the same, as the iPhone 4, in many areas, based my own tests.". He did say there are several areas in which it can burn more power, such as very detailed graphically intensive 3D games.
Edited by steelbom - 11/1/11 at 9:53pm
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post #58 of 85
Quote:
Originally Posted by steelbom View Post
Sigh...

1) I never said it was anything to do with the dual core itself, I obviously meant the fact that tasks can finish twice as quickly with a dual-core and thus still use the same amount of power which isn't true in all cases of course, but I didn't need to say that. Look at the iPad 2 for example, which has the A5 yet actually gets better battery life whilst having a battery that's only 0.1 Whr more than the battery in the iPad 2.
What you meant and what you said were 2 completely different things. Likewise, you are still wrong. Dual cores DO NOT finish tasks twice as quickly. You require multi-threaded code, and a few other architectures or algorithms, to take advantage of a dual core. And as it is common knowledge, dual cores rarely scale by 100%, in real world applications. There are way too many factors to consider. Let alone, the real fact, which is odd coming from someone who codes, that mutli-threaded code can scale more then twice as fast. Again, you have no idea what you are talking about...and I'm beginning to think you aren't even a coder...let alone, a good one at that.

The REAL FACT remains that non-threaded code or code that does not support multi-processors will see little to no benefit with the introduction of a dual core when single core performance is roughly the same. And before you want to jump on that and pick up your loose pieces, I'm not referring to the A4 and A5, but dual cores in general.

Please, either learn your stuff or stop posting in these threads. I dislike apple and yet I can defend them better then you. LOL.

Quote:
4) Nothing is confirmed yet although it looks to be the time zone polling right now
Thanks for repeating what I just said.

Quote:
Sigh.. how about you read my posts a little more clearly? I'm not stopping posting, and my information isn't wrong either. I'd wish you stop saying such things...
It is, and I've confirmed this in this and the last post. You go on an apple crusade attempting to prove the nay-sayers wrong and yet your own information is also wrong. It just sickens me. Get off your wooden horse, stop posting wrong information about your beloved product. It is just making apple fanboys just as bad as the other fanboys/haters.

You might just need to improve your grammar.
Edited by Domino - 11/1/11 at 10:04pm
post #59 of 85
Quote:
Originally Posted by steelbom View Post
EDIT: To quote Anand from the link posted above (~1:10-1:38) he says ~"The iPhone 4S, despite the improved performance, is actually more power efficient or the same, as the iPhone 4, in many areas, based my own tests.". He did say there are several areas in which it can burn more power, such as very detailed graphically intensive 3D games.
There's a really good reason why I pick Anandtech for most of my hardware reviews that I read. For PSUs I'll look at TPU and JG mostly, but when it comes to solid state, processors and graphics cards, Anand really gives a fair and thorough analysis of whatever's up on the chopping block. He really knows his stuff.

Apparently he's good on TV too. That video earned him a lot of respect from me.
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post #60 of 85
Quote:
Originally Posted by Domino View Post
What you meant and what you said were 2 completely different things. Likewise, you are still wrong. Dual cores DO NOT finish tasks twice as quickly. You require multi-threaded code, and a few other architectures or algorithms, to take advantage of a dual core. And as it is common knowledge, dual cores rarely scale by 100%, in real world applications. There are way too many factors to consider. Let alone, the real fact, which is odd coming from someone who codes, that mutli-threaded code can scale more then twice as fast. Again, you have no idea what you are talking about...and I'm beginning to think you aren't even a coder...let alone, a good one at that.
No, what I said and what I meant were one in the same. I'm OBVIOUSLY not suggesting that a dual-core processor will allow a single threaded task to finish twice as fast. The iPhone 4S has more than twice the Linpack score of the iPhone 4, which would suggest at least when it comes to processing numbers, it is scaling very well.

Sigh... stop trying to discredit me and insult me. It's immature.
Quote:
The REAL FACT remains that non-threaded code or code that does not support multi-processors will see little to no benefit with the introduction of a dual core when single core performance is roughly the same. And before you want to jump on that and pick up your loose pieces, I'm not referring to the A4 and A5, but dual cores in general.

Please, either learn your stuff or stop posting in these threads. I dislike apple and yet I can defend them better then you. LOL.
As I said above, it's ridiculously OBVIOUS that single-threaded code won't benefit from having a dual core processor with the exception of it having an entire core to itself while the other handles system or other tasks. As I said, read my posts clearly.
Quote:
Thanks for repeating what I just said.
I didn't. You said it was "confirmed to be poor coding on Apple's part". I said, "nothing is confirmed yet", although it does look to be the time zone polling issue. (The latter you did say, although not quite the same way.)
Quote:
It is, and I've confirmed this in this and the last post. You go on an apple crusade attempting to prove the nay-sayers wrong and yet your own information is also wrong. It just sickens me. Get off your wooden horse, stop posting wrong information about your beloved product. It is just making apple fanboys just as bad as the other fanboys/haters.

You might just need to improve your grammar.
Wow, I think that's seven or eight insults and attempts to discredit me in one single post. That's ridiculous, I could rag on about you plenty but I don't because it doesn't add anything constructive to the thread. And for the last time, I'll politely ask you to stop it because it's plain irritating and is borderline trolling.

Additionally, if you read my edit in the post you quoted. I said, Anand actually has said that the iPhone 4S is more power efficient, and at least as power efficient as the 4, in many or most scenarios, with exception to intensive 3D gaming, etc. And it's for the same reason that the iPad 2 gets the same or more battery life in some cases than the original iPad.

Quote:
Originally Posted by Homeles View Post
There's a really good reason why I pick Anandtech for most of my hardware reviews that I read. For PSUs I'll look at TPU and JG mostly, but when it comes to solid state, processors and graphics cards, Anand really gives a fair and thorough analysis of whatever's up on the chopping block. He really knows his stuff.

Apparently he's good on TV too. That video earned him a lot of respect from me.
Indeed, he was pretty good. I'm impressed.
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